Antenna structure



FIG. 1 is a perspective view of an antenna structure showing our newdesign;

FIG. 2 is a top plan view thereof, the bottom plan view being a mirrorimage thereof;

FIG. 3 is an enlarged view of a portion of the antenna structure shownin FIG. 4;

FIG. 4 is a front elevation view thereof;

FIG. 5 is a rear elevation view thereof;

FIG. 6 is a left side elevation view thereof; and,

FIG. 7 is a right side elevation view thereof.

The ornamental design for an antenna structure, as shown and described.